<%-if RedmineMorePreviews::Converter.responsible( @attachment.filename, :pathonly => true )&.id == :cliff %>
<%- unsafereloadpath = url_for(
      :controller    => "attachments",
      :action        => 'show',
      :id            => @attachment.id,
      :reload        => 1,
      :unsafe        => 1
    )
%>
<%= link_to l(:button_unsafe_update), unsafereloadpath, :class => "icon icon-warning" %>
<% end %>